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AI / Systems Engineer,Offensive Cybersecurity

Zealot is deploying AI systems at the center of western cyber operations, backed by tier-1 US VCs and industry leaders. Our team includes alumni of Anthropic, xAI, and Anduril. Soon live with close U.S. allies abroad.

APPLIED AISYSTEMSKERNELLOW-LEVEL
Doc // ZL.COR.AI-S
Rev // 2026.04
Classification // OPEN

§What You'll Do

  • Build production systems that conduct AI-driven vulnerability research and exploit development at scale.
  • Work close to the metal: operating system internals, kernel-level interfaces, and low-level performance optimization.
  • Own problems end-to-end across architecture, implementation, and shipped production code.
  • Partner directly with vulnerability researchers, security operators, and the engineering team to convert manual cyber operations into automated, repeatable systems.
  • Help define the standards and operating cadence of a team that intends to set the bar for AI-native offensive cyber.

§Requirements

  • 2+ years of engineering experience. Open to exceptional new grads with demonstrated low-level systems work.
  • Deep low-level systems experience: operating system internals, kernel work, runtime detection, dynamic analysis, dynamic interception, or comparable. This is non-negotiable.
  • Strong builder mindset. Comfortable owning systems end-to-end and shipping production code where performance and correctness matter.
  • Comfort with ambiguity and uncertainty. The most important cultural requirement.
  • Willing to be in person in Washington, D.C., 5 days per week. Full relocation support provided.
  • Eligible for the security clearances and customer requirements associated with U.S. government work.

§Nice to Have

  • Vulnerability research, CTF, or prior offensive security experience.
  • Prior YC company as founder or early engineer.
  • Engineering experience at xAI, Anthropic, Scale, Palantir, or similar high-bar AI companies.
  • Open-source contributions to OS-level tooling.
  • Cyber or security startup engineering experience, especially runtime detection, dynamic analysis, or operating system tooling.
  • Exposure to ML/AI systems work.

§You Are

  • A low-level systems builder first. The non-negotiable is fluency close to the metal; speed is the team's defining operating value.
  • Comfortable owning problems end-to-end, optimizing for real hardware, and shipping production systems where performance and correctness matter.
  • Building something massive matters more to you than comfort, titles, or predictability.
  • You want to be early at a company that will change an industry, and you're ready to do what that actually takes.
Ready?

Apply for AI / Systems Engineer, Offensive Cybersecurity

Email team@zealotlabs.com with a resume and a paragraph on what you want to build with us.

Apply now